Automatic smoke-preventer.



' C. J. ARNOLD & W. P. RUTHERFORD.

AUTOMATIC SMOKE PREVENTER.

APPLICATION FILED OCT. 13, 1914.

LlEBfiWY. Patented Dec. 28, 1915.

2 SHEETS-SHEET I.

C. .I. ARNOLD & W. P. RUTHERFORD.

AUTOMATIC SMOKE PREVENTER.

7 APPLICATION FILED OCT-13. I914. 1,166.,8

2 SHEETS-SHEET 2.

Patented Dec. 28, 1915.

COLUMBIA PLANDCIRAPH co wasfllNoToN, n. c.

iii

the county oi: .lefi'erson and tithltlif UI-lLtidltLEEi ll" ARNOLD AND lJVILLIjtTd PA'STJKIE HUTHEJEUBORD, 01 LOUISVILLE, IUENJTUCKY.

r r or r i l i ll llllii dill .lL-pgliczmh xon. and Untnher iii lillldn To all in ham it 771621] concern 1-e it known that we, Crmnmas J. An"): OLD and WrLLtAM P. RUTHERFORD, citizens of the llnited i itates, residing); at Louisville in State of lien invented. new and useful 1min ihUllOiTltltiC Smokedrhfereir ]S a specificatrailer, hare "pro rements tors of "which the folleirin tion.

'lfhe invention relates to a hoiler 'linrnace attaehnrent, and more especially to the class olf :nitoinatic smoke preventive devices for lioiler or other furnaces.

lthe primary ohject oi the lTlVLTli'lOH is the provision of a device o't this character wherein. on the opening at the doors to the tire horn-s oi the boiler 'Fllll'lHCL! steam "will. he Hdhil'tttd to the fire hoxes to in'erent the Sliitililllfl ol? the tire and on the (ElOFdHf L' at the said doors the steam will he automatieallv and gradually shut of? from the fire hox es o't he furnace, thereby preventing the smoking of the said furnace.

Another object of the invention is the Z5 provision of a device of this character which is novel in form to insure the automatic Working thereof with certainty for preventing the smoking of the fire of a furnace.

A further object which is simple in construction, automatic in operation, reliable and efficient 1n its pur- 1 manufacture and of the invention is the B0 provision of a device of thls character ll hi t innit ed ll l ne. we, .lttlll ll Eli.

rah-in to. rerun.

Similar reference characters indicate corresponding parts throughout the several views in the druuingr.

Referring to the drawing in detail, A designator; generally the trout ot a hoiler furnace oi the usual Well known construe tion. 1-1 the [ire hox door-: (l the 115th nit doors and l) the steam supply pipe leading from the hoiler ol the said 'lurnaee, the said pipe D being fitted with respective globe and hutterllr ralree it and l the latter having conneeted to its stein an arm or lever (l which is operated hy means at the device herein ilii ltl Tull) deserihml.

Connected to the steam supply pipe 1] is a cross hraurh pipe '10, to which are connected strain jets 11, the latter hein extended through the Front wall ot the :l'urnace into the tire elnnuhers therein so that steam may he supplied through the ets 1] thereinto.

The device comprises elocl: mechanism including a frame 12. which is bolted or otherwise fastened to the front -\vali EL of the furnace at one side of the doors thereon and within this frame is jonrnaled an arbor 13, to which are fixed the respective rocker arm gear 1 1 and S -toothed gear 15, the latter meshing with a 72-toothed gear 16 fixed to a shaft 17 ionrnaled in the said frame 12, which has fixed thereto a 21-toothed ratchet gear 18 and an S-toothed sprocket gear 19, While pivotally connected at diametrically opposite points on one face of the gear 23 

